Home / 3,860.18-5,790.26-938.46

Finding the Fourth Proportional to 3,860.18, 5,790.26 and 938.46

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Solution

The fourth proportional to 3,860.18, 5,790.26 and 938.46 is: 1,407.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,860.18 : 5,790.26 = 938.46 : x
  2. Step 2: Convert to fraction form
    3,860.18/5,790.26 = 938.46/x
  3. Step 3: Cross multiply
    3,860.18x = 5,790.26 × 938.46
  4. Step 4: Simplify right side
    3,860.18x = 5,433,927.40
  5. Step 5: Solve for x
    x = 5,433,927.40/3,860.18
  6. Step 6: Final answer
    x = 1,407.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.